I'm almost halfway through Marlborough: His Life and Times (Book One) by Winston Churchill, this book contains Volumes I & II of his 4 Volume biography of his ancestor. Volume I covers all of Marlborough's life up to the death of William III, which is basically half a century while the other three Volumes covers the rest of his life and especially his military campaigns.
I had the same WTF reaction because normally the free books I get are full of typos, and eye-rolling plot lines. Also, I had a giant hangover the first go-around and anything I had read would have made me less miserable.
I absolutely loved Enemy. I got my copy free from Kindle First. I am now waiting anxiously for the the next installment out on July 16 (I think). So far it has made my list for the 2017 Hugo awards. I really, really liked it. For anyone who hasn't read it, the story